Temporary Error 8
This error message typically corrects itself within a few hours, but you can often fix the error by making any change to your Yahoo Mail settings. Here's how.
- Sign in to Yahoo Mail.
- Mouse over the Settings menu icon | select Settings.
- Click Writing email on the left.
- Check or uncheck an item, such as Save a copy of the message in the Sent folder.
- Click Save.
Repeat the steps to undo the changes you made in step 4. The error should be gone.